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From: nascar24 (nascar24home.nl)
Date: Mon Jul 01 2002 - 19:45:37 CDT

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    What I mean is that I want to grand acces to the internet. But only to ports
    I 'trust', like 80,21,22 etc. But when I make a rule like:

    add 550 allow ip from me to any 80,21,22

    I cannot acces a website, that puzzles me.

    > On Mon, Jul 01, 2002 at 15:57 +0200, nascar24 wrote:
    > >
    > > I've been using the IPFW for some time now but I have one problem. I
    have
    > > closed my firewall (I guess) from attacks from the outside world. But I
    am
    > > open to attacks from within, i.e: trojan horses etc.
    > >
    > > Here is my rc.firewall.rules file. I think it is in rule 500 & 550. But
    if I
    > > change them to 21,22,80,8080 I cannot connect to any websites or FTP
    sites.
    > >
    > > [ filter rule set snipped ]
    > >
    > > I hope you can help, thanks in advance.
    >
    > What exactly is your question?
    >
    > If you want to "less trust the inside", close the inner interface
    > as much as you did with the outside.
    >
    > If you are looking for hints on how to generally improve your
    > filter rules I strongly suggest you have a look at the ipfilter
    > HowTo -- even if you don't use ipf: this document talks about
    > the basics, too, plus derives / designes a rule set from bottom
    > up. Visit www.ipfilter.org or look at the misc/26763 PR (Cyrille
    > Lefevre, "installing ipfilter sample files to share/examples").
    >
    >
    > virtually yours 82D1 9B9C 01DC 4FB4 D7B4 61BE 3F49 4F77 72DE DA76
    > Gerhard Sittig true | mail -s "get gpg key" Gerhard.Sittiggmx.net
    > --
    > If you don't understand or are scared by any of the above
    > ask your parents or an adult to help you.
    >
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